EEVblog #102 – DIY Constant Current Dummy Load for Power Supply and Battery Testing

Dave grabs a few junkbox parts and builds a useful constant current load for switch mode power supply, battery testing, and other applications.

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    • Dave J:

      Looks like you may have to put together some kits for this project!

      Crack job!
      -Robb

      • One more thing I forgot; you were going to post some tips on how to properly tie off the unused portion(s) of op amps.

        Just a FYI . . .

    • Chupacabras

      Where to get that 4-digit (or 3 1/2?) display used in this dummy load?